8820920

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{2141}}^1$

素因数の和:2255

約数の個数: 32

約数和(自身を含む): 20049120

約数和(自身を除く): 11228200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 2141, 4120, 4282, 8564, 10705, 17128, 21410, 42820, 85640, 220523, 441046, 882092, 1102615, 1764184, 2205230, 4410460, 8820920]

約数ペア:

[(1, 8820920), (2, 4410460), (4, 2205230), (5, 1764184), (8, 1102615), (10, 882092), (20, 441046), (40, 220523), (103, 85640), (206, 42820), (412, 21410), (515, 17128), (824, 10705), (1030, 8564), (2060, 4282), (2141, 4120)]